.EFU File

.efu is Encryptafile Public Key File

Key Features: .EFU File Extension

Features	Description
File Extension	.efu
Format	N/A
Created by	XenoSystems
Category	Encoded

What is an .EFU file?

Public Key used to authenticate an encrypted Encryptafile (.EFL) file; contains a hexadecimal representation of the public key; made available to the public and used along with the Private Key (.EFR) file to verify a digitally signed file.

The length of a public key file must be greater than or equal to 16 bits, and less than or equal to 7128 bits.

XenoSystems

Encoded

N/A

How to solve problems with EFU files

Associate the EFU file extension with the correct application. On :
Windows: Right click on any EFU file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.EFU files". Mac: Right click (or Ctrl-click) the EFU file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
Update your software that should actually open .EFU is Encryptafile Public Key File. Because only the current version supports the latest EFU file format. Search, therefore, e.g. on the XenoSystems manufacturer website after an available .EFU is Encryptafile Public Key File update.
To make sure that your EFU file is not corrupted or virus-infected, get the file again and scan it with antivirus software.